package com.itheima.reggie.controller;

import com.alibaba.druid.sql.ast.expr.SQLCaseExpr;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.fasterxml.jackson.databind.ser.Serializers;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import sun.rmi.runtime.Log;

import java.util.List;
import java.util.stream.Collectors;

/**
 * @author shkstart
 * @create 2022-05-13 16:03
 */
@RestController
@Slf4j
@RequestMapping("/dish")
public class DishController {

    @Autowired
    public DishService dishService;

    @Autowired
    public DishFlavorService dishFlavorService;

    @Autowired
    public CategoryService categoryService;

    /**
     * 菜品信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){

        //构造分页构造器对象
        Page<Dish> pageInfo = new Page<>(page,pageSize);
        Page<DishDto> dishDtoPage = new Page<>();

        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(name != null,Dish::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);

        //执行分页查询
        dishService.page(pageInfo,queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");

        List<Dish> records = pageInfo.getRecords();

        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if(category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id){

        DishDto dishDto = dishService.getByIdWithFlavor(id);

        return R.success(dishDto);
    }

    /**
     * 修改菜品
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);

        return R.success("新增菜品成功");
    }
//    @GetMapping("/list")
//    public R<List<DishDto>> list(Dish dish){
//        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
//        queryWrapper.like(StringUtils.isNotEmpty(dish.getName()),Dish::getName,dish.getName());
//        queryWrapper.eq(dish.getCategoryId() != null,Dish::getCategoryId,dish.getCategoryId());
//        queryWrapper.eq(Dish::getStatus,1);
//        queryWrapper.orderByDesc(Dish::getUpdateTime);
//
//        List<Dish> dishs = dishService.list(queryWrapper);
//
//        List<DishDto> dishDtos = dishs.stream().map((item) -> {
//            DishDto dishDto = new DishDto();
//            BeanUtils.copyProperties(item, dishDto);
//            Category category = categoryService.getById(item.getCategoryId());
//            if (category != null) {
//                dishDto.setCategoryName(category.getName());
//            }
//            LambdaQueryWrapper<DishFlavor> wrapper = new LambdaQueryWrapper<>();
//            wrapper.eq(DishFlavor::getDishId, item.getName());
//            dishDto.setFlavors(dishFlavorService.list(wrapper));
//            return dishDto;
//        }).collect(Collectors.toList());
//
//        return R.success(dishDtos);
//    }
//    @GetMapping("/list")
//    public R<List<DishDto>> list(Dish dish){
//        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
//        queryWrapper.eq(dish.getCategoryId() != null,Dish::getCategoryId,dish.getCategoryId());
//        //添加检查状态是起售状态的菜品
//        queryWrapper.eq(Dish::getStatus,1);
//        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
//
//        List<Dish> list = dishService.list(queryWrapper);
//
//
//
//        List<DishDto> dishDtosList = list.stream().map((item)->{
//
//            DishDto dishDto = new DishDto();
//            BeanUtils.copyProperties(item,dishDto);
//            Long categoryId = item.getCategoryId();
//            Category category = categoryService.getById(categoryId);
//            if (category != null){
//                String categoryName = category.getName();
//                dishDto.setCategoryName(categoryName);
//            }
//            Long dishId = item.getId();
//            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
//            lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);
//            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
//            dishDto.setFlavors(dishFlavorList);
//            return dishDto;
//        }).collect(Collectors.toList());
//        return R.success(dishDtosList);
//    }
@GetMapping("/list")
public R<List<DishDto>> list(Dish dish){
    //构造查询条件
    LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
    queryWrapper.eq(dish.getCategoryId() != null ,Dish::getCategoryId,dish.getCategoryId());
    //添加条件，查询状态为1（起售状态）的菜品
    queryWrapper.eq(Dish::getStatus,1);

    //添加排序条件
    queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

    List<Dish> list = dishService.list(queryWrapper);

    List<DishDto> dishDtoList = list.stream().map((item) -> {
        DishDto dishDto = new DishDto();

        BeanUtils.copyProperties(item,dishDto);

        Long categoryId = item.getCategoryId();//分类id
        //根据id查询分类对象
        Category category = categoryService.getById(categoryId);

        if(category != null){
            String categoryName = category.getName();
            dishDto.setCategoryName(categoryName);
        }

        //当前菜品的id
        Long dishId = item.getId();
        LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);
        //SQL:select * from dish_flavor where dish_id = ?
        List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
        dishDto.setFlavors(dishFlavorList);
        return dishDto;
    }).collect(Collectors.toList());

    return R.success(dishDtoList);
}

}
